The X.org developers have released version X11R7.6 of their graphics system, which contains the X Server version 1.9.3. One of the innovations in 7.6 is that it uses udev for hardware detection and hot-plug notification; a HAL (Hardware Abstraction Layer) is no longer required.

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You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump